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Exploit.Siggen.63061
Added to the Dr.Web virus database:
2020-04-03
Virus description added:
2020-04-08
Technical Information
To ensure autorun and distribution
Creates the following services
[<HKLM>\System\CurrentControlSet\Services\C2C9A853] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\C2C9A853] 'ImagePath' = '<SYSTEM32>\svchost.exe -k LocalService'
[<HKLM>\SYSTEM\ControlSet001\services\C2C9A853] 'ImagePath' = '<SYSTEM32>\svchost.exe -k LocalService�'
[<HKLM>\SYSTEM\ControlSet001\services\C2C9A853\Parameters] 'ServiceDll' = '%PROGRAMDATA%\C2C9A853\819286F0.dll�'
[<HKLM>\SYSTEM\ControlSet001\services\C2C9A853] 'Start' = '00000002'
Malicious functions
Executes the following (exploit)
'<SYSTEM32>\rundll32.exe' %PROGRAMDATA%\crvyqPe.dll,f1
Injects code into
the following system processes:
<SYSTEM32>\services.exe
%WINDIR%\syswow64\rundll32.exe
<SYSTEM32>\winlogon.exe
Terminates or attempts to terminate
the following system processes:
%WINDIR%\syswow64\rundll32.exe
the following user processes:
Searches for registry branches where third party applications store passwords
[<HKCU>\SOFTWARE\Mirabilis\ICQ\NewOwners]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 8 Professional\QCToolbar]
[<HKCU>\Software\FlashFXP\3]
[<HKCU>\Software\FlashFXP]
[<HKLM>\Software\Wow6432Node\FlashFXP\3]
[<HKLM>\Software\Wow6432Node\FlashFXP]
[<HKCU>\Software\FileZilla]
[<HKCU>\Software\BPFTP\Bullet Proof FTP\Main]
[<HKCU>\Software\BulletProof Software\BulletProof FTP Client\Main]
[<HKCU>\Software\BPFTP\Bullet Proof FTP\Options]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 7 Professional\QCToolbar]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 8 Home\QCToolbar]
[<HKCU>\Software\BulletProof Software\BulletProof FTP Client\Options]
[<HKCU>\Software\Sota\FFFTP\Options]
[<HKCU>\Software\CoffeeCup Software\Internet\Profiles]
[<HKCU>\Software\FTPWare\COREFTP\Sites]
[<HKCU>\Software\FTP Explorer\Profiles]
[<HKCU>\Software\VanDyke\SecureFX]
[<HKCU>\Software\Cryer\WebSitePublisher]
[<HKCU>\Software\ExpanDrive\Sessions]
[<HKCU>\Software\NCH Software\ClassicFTP\FTPAccounts]
[<HKLM>\SOFTWARE\Wow6432Node\NCH Software\Fling\Accounts]
[<HKCU>\Software\BPFTP]
[<HKCU>\Software\TurboFTP]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 7 Home\QCToolbar]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 6 Professional\QCToolbar]
[<HKCU>\Software\GlobalSCAPE\CuteFTP 6 Home\QCToolbar]
[<HKCU>\Software\Yahoo\Pager]
[<HKCU>\Software\America Online\AOL Instant Messenger (TM)\CurrentVersion\Users]
[<HKCU>\Software\Google\Google Talk\Accounts]
[<HKCU>\Software\Paltalk]
[<HKCU>\Software\AIM\AIMPro]
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Uninstall\Trillian]
[<HKCU>\Software\RimArts\B2\Settings]
[<HKCU>\SOFTWARE\RIT\The Bat!]
[<HKCU>\SOFTWARE\RIT\The Bat!\Users depot]
[<HKCU>\Software\Microsoft\Internet Account Manager\Accounts]
[<HKCU>\Software\Microsoft\MSNMessenger]
[<HKLM>\Software\Wow6432Node\Microsoft\Internet Account Manager]
[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Microsoft Outlook Internet Settings]
[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook]
[<HKCU>\SOFTWARE\Far\Plugins\FTP\Hosts]
[<HKCU>\SOFTWARE\Far2\Plugins\FTP\Hosts]
[<HKCU>\Software\Far\SavedDialogHistory\FTPHost]
[<HKCU>\Software\Far2\SavedDialogHistory\FTPHost]
[<HKCU>\Software\Ghisler\Windows Commander]
[<HKCU>\Software\Ghisler\Total Commander]
[<HKLM>\Software\Wow6432Node\Ghisler\Windows Commander]
[<HKLM>\Software\Wow6432Node\Ghisler\Total Commander]
[<HKCU>\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts]
[<HKCU>\Software\Martin Prikryl\WinSCP 2\Sessions]
[<HKCU>\Software\South River Technologies\WebDrive\Connections]
Reads files which store third party applications passwords
%APPDATA%\mozilla\firefox\profiles.ini
%APPDATA%\opera software\opera stable\login data
%LOCALAPPDATA%\google\chrome\user data\default\web data
%LOCALAPPDATA%\google\chrome\user data\default\login data
%APPDATA%\thunderbird\profiles.ini
%LOCALAPPDATA%\google\chrome\user data\default\cookies
Modifies settings of Windows Internet Explorer
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyEnable' = '00000001'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyServer' = '127.0.0.1:8080�'
[\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyEnable' = '00000001'
[\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyServer' = '127.0.0.1:8080�'
[\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyEnable' = '00000001'
[\REGISTRY\USER\S-1-5-20\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyServer' = '127.0.0.1:8080�'
[<HKCU>_Classes\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyEnable' = '00000001'
[<HKCU>_Classes\Software\Microsoft\Windows\CurrentVersion\Internet Settings] 'ProxyServer' = '127.0.0.1:8080�'
Modifies file system
Creates the following files
%PROGRAMDATA%\crvyqpe.dll
%TEMP%\1270078.tmp
%TEMP%\1270078.tmp-shm
%TEMP%\1270578.tmp
%TEMP%\1270671.tmp
%TEMP%\1270687.tmp
%TEMP%\1270687.tmp-shm
%TEMP%\1271218.tmp
%TEMP%\1271218.tmp-shm
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\desktop.ini
%TEMP%\1271796.tmp
%TEMP%\1272187.tmp
%TEMP%\1272203.tmp
%TEMP%\1272218.tmp
%TEMP%\1272296.tmp
%TEMP%\1272296.tmp-shm
%TEMP%\1272390.tmp
%TEMP%\1272390.tmp-shm
%PROGRAMDATA%\c2c9a853\8b41c2e0\0e8af40d68e9501fbac5ea696fa86046.zip
%TEMP%\1269609.tmp
%TEMP%\1270062.tmp
%TEMP%\1269593.tmp
%PROGRAMDATA%\microsoft\crypto\rsa\machinekeys\8a39d09abfc2638aba2fc327dc4e6412_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\history\low\history.ie5\index.dat
%PROGRAMDATA%\c2c9a853\98e9acc0.dll
%PROGRAMDATA%\c2c9a853\819286f0.dll
%PROGRAMDATA%\c2c9a853\ac47f7a9\73ddb524023f1904aef216146e84a13b
%PROGRAMDATA%\c2c9a853\fb254890
%TEMP%\1224906.tmp
%TEMP%\1225000.tmp
%TEMP%\1225093.tmp
%TEMP%\1225109.tmp
%PROGRAMDATA%\c2c9a853\ac47f7a9\d6e894aa4e792d0da02477ac802382bc
%TEMP%\1271843.tmp
%WINDIR%\syswow64\config\systemprofile\favorites\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\history\low\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\history\low\history.ie5\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\index.dat
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\1y4k1d6u\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\cy8ffv0h\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\ckt7u8vj\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\jcam554r\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\roaming\microsoft\windows\cookies\low\index.dat
%PROGRAMDATA%\c2c9a853\ab13f49d
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\desktop.ini
%PROGRAMDATA%\c2c9a853\ac47f7a9\30d79bbe44018d8d5bfb55a580e73ddf
Sets the 'hidden' attribute to the following files
%PROGRAMDATA%\c2c9a853\98e9acc0.dll
%PROGRAMDATA%\c2c9a853\819286f0.dll
%WINDIR%\syswow64\config\systemprofile\favorites\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\1y4k1d6u\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\cy8ffv0h\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\ckt7u8vj\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\<INETFILES>\low\content.ie5\jcam554r\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\history\low\history.ie5\desktop.ini
%WINDIR%\syswow64\config\systemprofile\appdata\local\microsoft\windows\history\low\desktop.ini
Deletes the following files
%PROGRAMDATA%\c2c9a853\fb254890
%PROGRAMDATA%\c2c9a853\ac47f7a9\73ddb524023f1904aef216146e84a13b
%TEMP%\1270078.tmp-shm
%TEMP%\1270687.tmp-shm
%TEMP%\1271218.tmp-shm
%TEMP%\1272296.tmp-shm
%TEMP%\1272390.tmp-shm
%PROGRAMDATA%\c2c9a853\8b41c2e0\0e8af40d68e9501fbac5ea696fa86046.zip
%PROGRAMDATA%\c2c9a853\ac47f7a9\30d79bbe44018d8d5bfb55a580e73ddf
%PROGRAMDATA%\c2c9a853\ac47f7a9\d6e894aa4e792d0da02477ac802382bc
Substitutes the following files
%PROGRAMDATA%\c2c9a853\fb254890
Network activity
TCP
HTTP GET requests
http://co####tedmerc.xyz/BAYgODA0NUQ2OEY1RTA2ODg4RDhCQzlEQzRBRUU3QTA5OUI=
'18#.#81.8.49':443
UDP
DNS ASK co####tedmerc.xyz
Miscellaneous
Adds a root certificate
Searches for the following windows
ClassName: 'D94D56B5' WindowName: 'D94D56B5'
Creates and executes the following
'<SYSTEM32>\rundll32.exe' %PROGRAMDATA%\crvyqPe.dll,f1' (with hidden window)
'%WINDIR%\syswow64\rundll32.exe' %ProgramFiles%\crvyqPe.dll,f0' (with hidden window)
'%WINDIR%\syswow64\rundll32.exe' %ProgramFiles%\C2C9A853\819286F0.dll,f1 %ProgramFiles%\crvyqPe.dll@2964' (with hidden window)
Executes the following
'%WINDIR%\syswow64\rundll32.exe' %ProgramFiles%\crvyqPe.dll,f0
'%WINDIR%\syswow64\rundll32.exe' %ProgramFiles%\C2C9A853\819286F0.dll,f1 %ProgramFiles%\crvyqPe.dll@2964
'<SYSTEM32>\rundll32.exe' %ProgramFiles%\C2C9A853\819286F0.dll,f1 %ProgramFiles%\crvyqPe.dll@2964
'<SYSTEM32>\rundll32.exe' %PROGRAMDATA%\C2C9A853\819286F0.dll,f2 72D316C1CAD6D793C258DF23A1B24090
'<SYSTEM32>\svchost.exe' -k LocalService
'%WINDIR%\syswow64\rundll32.exe' %PROGRAMDATA%\C2C9A853\98E9ACC0.dll,f3
'%WINDIR%\syswow64\rundll32.exe' "%WINDIR%\syswow64\wininet.dll",DispatchAPICall 1
'%WINDIR%\syswow64\rundll32.exe' %PROGRAMDATA%\C2C9A853\98E9ACC0.dll,f7
'%WINDIR%\syswow64\rundll32.exe' %PROGRAMDATA%\C2C9A853\98E9ACC0.dll,f2 B003C6D5EF304D6EC18B5FD767831E49
Curing recommendations
Windows
macOS
Linux
Android
If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space .
If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.
If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
Switch off your device and turn it on as normal.
Find out more about Dr.Web for Android
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